//
//Copyright 2018 vip.com.
//
//Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
//the License. You may obtain a copy of the License at
//
//http://www.apache.org/licenses/LICENSE-2.0
//
//Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
//an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
//specific language governing permissions and limitations under the License.
//

#include "checksum.h"

namespace syncer {

boost::crc_32_type CheckSum::crc32_;
rdp_comm::spinlock_t CheckSum::lock_;

int64_t CheckSum::Get(void const *buffer, std::size_t byte_count) {
  rdp_comm::lock_guard guard(&lock_);

  crc32_.process_bytes(buffer, byte_count);
  int64_t rs = crc32_.checksum();

  crc32_.reset();

  return rs;
}

}  // namespace syncer
